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Apple’s mysteriously delayed “AirPods” were finally available for Christmas orders on Tuesday — until they weren’t.

The new, wireless version of Apple’s headphones popped up on Apple’s site Tuesday morning after being delayed more than a month and a half from their original launch date of late October.

Nevertheless, estimated shipping times on Apple’s site for the $159 Bluetooth-enabled AirPods quickly stretched to four weeks — well past the Christmas deadline and into 2017.

“Product of the year. But which year?” one customer griped on Twitter.

Almost immediately, opportunists who were quick enough to grab a pair of AirPods in the early morning began posting them for sale at wildly inflated prices.

One eBay listing was advertising a pair for $1,590 — 10 times the already lofty retail price — with the seller claiming to have secured a Dec. 21 delivery date after ordering “a mere minutes after they went on sale.”

Not to be outdone, another seller listed a pair for $2,000.

“Why am I asking so much for them … because I really don’t want to sell them,” the Texas-based seller wrote on the listing. “Really, I’m just being honest.”

The snafu is the latest holiday headache for Apple Chief Executive Tim Cook, who most recently has fielded complaints over the tech giant’s new line of MacBook Pro laptops, which have shorter battery life than the previous models.

In September, Apple faced an uproar when it revealed that the new iPhone 7 wasn’t equipped with a headphone jack.

Apple never gave an official reason for the delay, simply saying that the AirPods were “not ready.”